*{box-sizing:border-box}body{margin:0;background:var(--page);color:var(--ink);font-family:ui-rounded,PingFang SC,Microsoft YaHei,system-ui,sans-serif}main{max-width:1120px;margin:auto;padding:34px 24px 64px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;color:var(--accent)}h1{font-size:clamp(29px,4.5vw,49px);line-height:1.2;letter-spacing:-.04em;margin:12px 0 16px}.intro{font-size:18px;line-height:1.8;color:var(--secondary);max-width:730px}.lab{margin-top:26px;border:1px solid var(--border);border-radius:28px;overflow:hidden;background:var(--surface);box-shadow:0 16px 50px #172b3910}.scene{position:relative;background:#edf4e5}.scene svg{display:block;width:100%;height:auto;max-height:540px}.scene svg text{font-family:inherit}.controls{padding:22px;display:flex;gap:12px;align-items:center;flex-wrap:wrap;border-top:1px solid var(--border)}button{font:inherit;font-weight:700;font-size:16px;padding:13px 18px;border:1px solid var(--border);border-radius:14px;color:var(--ink);background:var(--page);cursor:pointer;min-height:48px}button[aria-pressed=true]{background:var(--accent);color:#fff;border-color:var(--accent)}button:disabled{opacity:.45;cursor:default}button:hover:not(:disabled){filter:brightness(.95)}button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #df8050;outline-offset:4px}input[type=range]{accent-color:var(--accent);min-height:44px;flex:1;min-width:130px}input[type=checkbox]{width:20px;height:20px;accent-color:var(--accent)}label{display:flex;align-items:center;gap:9px;font-weight:650}.readout{display:grid;grid-template-columns:50px 1fr;gap:14px;padding:22px 26px;background:color-mix(in srgb,var(--accent) 7%,var(--surface));border-top:1px solid var(--border)}.badge{height:42px;width:42px;display:grid;place-items:center;border-radius:50%;background:var(--accent);color:#fff;font-weight:800}.readout h2{margin:0 0 8px;font-size:23px}.readout p{margin:0;font-size:18px;line-height:1.8}.prompt{padding:18px 24px;margin:22px 0;border-left:4px solid var(--accent);line-height:1.9;background:var(--surface);border-radius:0 14px 14px 0}details{margin-top:28px;border-top:1px solid var(--border);padding:20px 0;line-height:1.85;color:var(--secondary)}summary{font-weight:800;cursor:pointer;color:var(--ink);font-size:17px}details p{max-width:900px}a{color:var(--accent)}.source-list{padding-left:22px}.hidden,[hidden]{display:none!important}.small{font-size:14px;color:var(--secondary);line-height:1.7}.legend{padding:12px 22px;display:flex;gap:22px;flex-wrap:wrap;font-size:14px;color:var(--secondary)}.legend span{display:flex;align-items:center;gap:7px}.dot{height:12px;width:12px;border-radius:50%;display:inline-block}.hint{font-size:14px;color:var(--secondary)}@media(max-width:600px){main{padding:22px 14px 40px}.intro{font-size:16px}.lab{border-radius:20px}.controls{padding:15px;gap:8px}button{font-size:14px;padding:11px 13px}.readout{padding:18px 16px;grid-template-columns:32px 1fr;gap:12px}.badge{width:30px;height:30px}.readout h2{font-size:21px}.readout p{font-size:16px}.scene svg{min-height:250px}.prompt{padding:14px 17px}.legend{padding:12px 16px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.hotspot{position:absolute;transform:translate(-50%,-50%);width:20%;height:29%;min-height:48px;min-width:48px;border:0;background:transparent;border-radius:50%;padding:0}.hotspot:hover{background:#ffffec0e;filter:none}.hotspot:focus-visible{outline:4px solid #fff0aa;outline-offset:0;background:#ffffec20}.scene svg{min-height:0}.hotspot[aria-pressed=true]{background:transparent;color:inherit;border:0}.hotspot[aria-pressed=true]:focus-visible{background:#ffffec20}